Confession: The last time I used a Bosu ball was at least five years ago. In the meantime I've dabbled with resistance bands, kettlebells, and a rower in my workouts to keep things interesting. Still, ...
If you haven't used a BOSU ball before, be prepared to fire up your entire core. This versatile exercise tool tests your core strength and balance by adding an element of instability. On one side, you ...
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